全国各地中考真题:广东省深圳市2018年中考生物真题试题(含解析)
广东省深圳市2018年中考生物真题试题一、单项选择题1.诗句“雨露滋润禾苗壮”所隐含的影响植物生长的非生物因素是()A.阳光B.温度C.水分D.空气【答案】C【解析】诗句“雨露滋润禾苗壮”体现了水(非生物因)影响了生物禾苗的生活。点睛:环境中影响生物生活的各种因素称为生态因素,可以分为非生物因素和生物因素。非生物因素包括:光、温度、水、空气、土壤等。生物因素是指环境中影响某种生物个体生活的其他所有生物,包括同种和不同种的生物个体。2.在利用显微镜观察细胞时,以下操作步骤:①安装物物镜和目镜②取镜③对光④观察,正确的操作顺序是()A.①②③④B.②①③④C.①②④③D.④①③②【答案】B【解析】...
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